當APK沒有我的服務器上不存在於Android

Question

public void getServerApk() { 
Uri mUri = Uri.parse(Url); //Uri == my server domain 
DownloadManager.Request r = new DownloadManager.Request(mUrl); 
r.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "my.apk"); 
r.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED); 
DownloadManager dm = (DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE); 
dm.enqueue(r); 

，並在下載完成my.apk ......如果我的APK服務器上存在

private BroadcastReceiver apkReceiver = new BroadcastReceiver() { 
    @Override 
    public void onReceive(Context context, Intent intent) { 
     try { 
     String InstallCommand,RebootCommand; 

     InstallCommand = "pm install -r /sdcard/Download/my.apk"; 
     RebootCommand = "reboot"; 
     Process Insproc = Runtime.getRuntime().exec(new String[]{"su", "-c", InstallCommand}); 
     Insproc.waitFor(); 

     Process Rebootproc = Runtime.getRuntime().exec(new String[] {"su", "-c", RebootCommand}); 
     Rebootproc.waitFor(); 
     } catch (Exception e) { 
     e.printStackTrace(); 
     } 
    } 
    }; 

這段代碼工作。這是正常操作

但是當我的服務器上不存在Apk時，不存在apk。只有重啓。

我想如果Apk不存在。 android.os.Process.killProcess(android.os.Process.myPid()); 執行。

當我的服務器上不存在Apk時，如何執行下面的代碼。 android.os.Process.killProcess(android.os.Process.myPid());以編程方式安卓android？

Answer 1

這就是我的意思是（檢查文件存在，並且文件大小爲好） 在onReceive()方法如下更改代碼：

@Override 
public void onReceive(Context context, Intent intent) { 
    try { 
     //------START add this code ------- 
     File apkFile = new File("/sdcard/Download/my.apk"); 

     //length is file size in bytes, use other size if you want, like (minimum size) 
     //(apkFile.length < 512000) where 512000 byte = 500KB, this will mean file size should be at least 500KB 
     if(!apkFile.exists() || apkFile.length <= 0){ 
      //download failed 
      android.os.Process.killProcess(android.os.Process.myPid()); 
      return; 
     } 
     //------END add this code ------- 

     String InstallCommand,RebootCommand; 

     InstallCommand = "pm install -r /sdcard/Download/my.apk"; 
     RebootCommand = "reboot"; 
     Process Insproc = Runtime.getRuntime().exec(new String[]{"su", "-c", InstallCommand}); 
     Insproc.waitFor(); 

     Process Rebootproc = Runtime.getRuntime().exec(new String[] {"su", "-c", RebootCommand}); 
     Rebootproc.waitFor(); 
    } catch (Exception e) { 
     e.printStackTrace(); 
    } 
}